Your buildup is wonderfully done! You successfully create a wonderful suspense with the different descriptions of the approaching man. It's ten times more creepy when you can't see all of the villain at once!

THe whole description and all is beautiful, too. My only issue is that it's never clear what kind of creatures these cannibals are. Would the orbs be eyes, or creatures? You don't describe the features of the sacrifice, you see, so it's unclear. The description isn't necessary, but the lack of one makes the horror or the cannibalism less effective.